If a= √5-1//5+1 and b= √5+1/√5-1, Find a + b...? Mcqs

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If a= √5-1//5+1 and b= √5+1/√5-1, Find a + b...?

(A) 2
(B) 4

(C) 6
(D) 8

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A certain number of two digits is three times the sum of its digits, and if 45 be added to it, its digits are reversed. Find the number.

(A) 27
(B) 39

(C) 45
(D) None of these

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Two numbers are in the ratio 7: 9, if the sum of the numbers is 112, then the larger number is:...?

(A) 49
(B) 72

(C) 63
(D) 42

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1, 9, 25, 49,_____________121...?

(A) 100
(B) 81

(C) 91
(D) 94

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On a 20% discount sale, an article costs. What was the original price of the article:...?

(A) 720
(B) 735

(C) 745
(D) 775

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If a certain job can be finished by 18 workers In 26 days. How many workers are needed to finish job in 12 days...?

(A) 33 days
(B) 36 days

(C) 39 days
(D) 42 days

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Ali has 20 Rs and Asim has 16 Rs. What is the ratio between them...?

(A) 4:5
(B) 5:4

(C) 3:4
(D) 2:3

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If x= 3 + √8 Find the value of x² + 1/x²...?

(A) 32
(B) 34

(C) 36
(D) None of these

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If a person reads 3/8 of a book in a day. Next day he reads 4/5 of the rest. Now 40 pages are left. How many pages are there in book...?

(A) 240
(B) 320

(C) 360
(D) 380

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Complete the series: 1, 1, 8, 4, 27, 9,...?

(A) 64
(B) 20

(C) 60
(D) 16

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